Hey new to salehoo and looking for advice

Hey i've just recently joined salehoo and have been recently subscribed to Sky High Auctions and have been reading through and i think i've decided on my first niche. Im going to sell child bike seats and i was wondering if anyone could suggest any wholesellers where i could purchase them from. I live in the UK if that makes any difference but i would obviously be looking for someone anywhere in the world.

Any advice or suggestions for when im starting out you have to throw at me would also be greatly appreciated.